<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true"
            >添加角色</el-button
          >
        </el-col>
      </el-row>
    </el-card>

    <!-- 角色列表区域 -->
    <el-table :data="rolelist" stripe border>
      <!-- 展开列 -->
      <el-table-column type="expand">
        <template slot-scope="scope">
          <el-row
            :class="['bdbottom', 'vcenter', i1 === 0 ? 'bdtop' : '']"
            v-for="(item1, i1) in scope.row.children"
            :key="item1.id"
          >
            <!-- 渲染一级权限 -->
            <el-col :span="5">
              <el-tag closable @close="removeRightById(scope.row, item1.id)">{{
                item1.authName
              }}</el-tag>
              <i class="el-icon-caret-right"></i>
            </el-col>
            <!-- 渲染二级和三级权限 -->
            <el-col :span="19">
              <!-- 通过for循环 嵌套渲染二级权限 -->
              <el-row
                :class="['vcenter', i2 === 0 ? '' : 'bdtop']"
                v-for="(item2, i2) in item1.children"
                :key="item2.id"
              >
                <!-- 二级权限 -->
                <el-col :span="6">
                  <el-tag
                    type="success"
                    closable
                    @close="removeRightById(scope.row, item2.id)"
                  >
                    {{ item2.authName }}
                  </el-tag>
                  <i class="el-icon-caret-right"></i>
                </el-col>
                <!-- 三级权限 -->
                <el-col :span="18">
                  <el-tag
                    type="warning"
                    v-for="item3 in item2.children"
                    :key="item3.id"
                    closable
                    @close="removeRightById(scope.row, item3.id)"
                  >
                    {{ item3.authName }}
                  </el-tag>
                </el-col>
              </el-row>
            </el-col>
          </el-row>
        </template>
      </el-table-column>
      <!-- 索引列 -->
      <el-table-column type="index" label="#"> </el-table-column>
      <el-table-column prop="roleName" label="角色名称"> </el-table-column>
      <el-table-column prop="roleDesc" label="角色描述"> </el-table-column>
      <el-table-column label="操作" width="300px">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="primary"
            icon="el-icon-edit"
            @click="showEditDialog(scope.row.id)"
            >编辑</el-button
          >
          <el-button
            size="mini"
            type="danger"
            icon="el-icon-delete"
            @click="removeRolesById(scope.row.id)"
            >删除</el-button
          >
          <el-button
            size="mini"
            type="warning"
            icon="el-icon-setting"
            @click="showSetRightDialog"
            >分配权限</el-button
          >
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%">
      <!-- 表单数据 -->
      <el-form
        :model="addForm"
        ref="addFormRef"
        :rules="rolesFormRulest"
        label-width="80px"
        class="demo-ruleForm"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoles">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog
      title="提示"
      :visible.sync="editDialogVisible"
      @close="editDialogClosed"
      width="50%"
    >
      <el-form
        :model="editForm"
        :rules="rolesFormRulest"
        ref="editFormRef"
        label-width="80px"
        class="demo-ruleForm"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoles">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配权限的对话框 -->
    <el-dialog title="提示" :visible.sync="setRightDialogVisible" width="50%">
      <span>这是一段信息</span>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="setRightDialogVisible = false"
          >确 定</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Roles',
  data() {
    return {
      // 所有角色列表数据
      rolelist: [],
      // 控制添加角色对话框的显示与隐藏
      addDialogVisible: false,
      // 添加角色的表单数据
      addForm: {
        roleName: '',
        roleDesc: '',
      },
      // 添加表单的验证规则对象
      rolesFormRulest: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' },
          {
            min: 2,
            max: 10,
            message: '长度在 2 到 10 个字符',
            trigger: 'blur',
          },
        ],
        roleDesc: [
          { required: true, message: '请输入角色描述', trigger: 'blur' },
          {
            min: 2,
            max: 15,
            message: '长度在 2 到 15 个字符',
            trigger: 'blur',
          },
        ],
      },
      //修改角色对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的角色用户信息对象
      editForm: {},
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      // 所有权限的数据
      rightslist: [],
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    //获取所有角色的列表
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status != 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolelist = res.data
      //console.log(this.rolelist)
    },
    //点击按钮，添加新角色
    addRoles() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return
        // 可以发起添加角色的网络请求
        const { data: res } = await this.$http.post('roles', this.addForm)
        if (res.meta.status != 201) {
          this.$message.error('添加角色失败！')
        }
        this.$message.success('添加用户成功！')
        //隐藏添加用户的对话框
        this.addDialogVisible = false
        //重新获取角色列表数据
        this.getRolesList()
      })
    },
    // 点击按钮显示角色信息
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status != 200) {
        this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      console.log(this.editForm)
      this.editDialogVisible = true
    },
    //监听修改角色对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改角色信息并提交
    editRoles() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return
        // 发起修改角色信息的数据请求
        const { data: res } = await this.$http.put(
          'roles/' + this.editForm.roleId,
          {
            roleName: this.editForm.roleName,
            roleDesc: this.editForm.roleDesc,
          }
        )
        if (res.meta.status != 200) {
          return this.$message.error('更新角色信息失败！')
        }
        // 关闭角色对话框
        this.editDialogVisible = false
        // 刷新数据
        this.getRolesList()
        // 提示修改成功
        this.$message.success('更新用户信息成功！')
      })
    },
    // 根据Id删除对应的角色信息
    removeRolesById(id) {
      this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      })
        .then(async () => {
          const { data: res } = await this.$http.delete('roles/' + id)
          if (res.meta.status !== 200) {
            return this.$message.error('删除角色失败！')
          }
          this.getRolesList()
          this.$message({
            type: 'success',
            message: '删除成功!',
          })
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除',
          })
        })
    },
    //根据id删除对应的角色权限
    async removeRightById(role, rightId) {
      //this.dynamicTags.splice(this.dynamicTags.indexOf(tag), 1)
      const confirmResult = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      )
        .then(async () => {
          const { data: res } = await this.$http.delete(
            `roles/${role.id}/rights/${rightId}`
          )
          if (res.meta.status != 200) {
            return this.$message.error('删除权限失败')
          }
          // 更新数据
          role.children = res.data
          this.$message({
            type: 'success',
            message: '删除权限成功!',
          })
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除',
          })
        })
    },
    // 展示分配权限的对话框
    async showSetRightDialog() {
      // 获取所有分配权限的对话框
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败！')
      }
      //把获取到的权限数据保存到data中
      this.rightslist = res.data
      console.log(this.rightslist)
      this.setRightDialogVisible = true
    },
  },
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
</style>
